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Submitted Date: January 11, 2007

'I'.
Patent Holder/Applicant ("Patent Holder")

Legal Name:

Cisco Systems

'II'.
Patent Holder's Contact for License Application

Name:

Dan Lang

Email:

standards-ipr@cisco.com

Other Info:(address,phone,etc)

'III'.
IETF Document or Other Contribution to Which this IPR Disclosure Relates:

Internet-Draft:

"WiMAX Forum / 3GPP2 Proxy Mobile IPv4"(draft-leung-mip4-proxy-mode)

'IV'.
Disclosure of Patent Information (i.e., patents or patent
applications required to be disclosed by Section 6 of RFC 3979)

A. For granted patents or published pending patent applications,
please provide the following information:

B. Does this disclosure relate to an unpublished pending patent application?:
no

'V'.
Licensing Declaration

The Patent Holder states that its position with respect
to licensing any patent claims contained in the patent(s) or patent
application(s) disclosed above that would necessarily be infringed by
implementation of the technology required by the relevant IETF specification
("Necessary Patent Claims"), for the purpose of implementing such
specification, is as follows(select one licensing declaration option only):

See Text Below for Licensing Declaration

Licensing information, comments, notes, or URL for further information:

If technology in this document is included in a standard adopted by IETF and any claims of any Cisco patents are necessary for practicing the standard, any party will have the right to use any such patent claims under reasonable, non-discriminatory terms, with reciprocity, to implement and fully comply with the standard.

The reasonable non-discriminatory terms are:

If this standard is adopted, Cisco will not assert any patents owned or controlled by Cisco against any party for making, using, selling, importing or offering for sale a product that implements the standard, provided, however that Cisco retains the right to assert its patents (including the right to claim past royalties) against any party that asserts a patent it owns or controls (either directly or indirectly) against Cisco or any of Cisco's affiliates or successors in title; and Cisco retains the right to assert its patents against any product or portion thereof that is not necessary for compliance with the standard.

Royalty-bearing licenses will be available to anyone who prefers that option.

Note: The individual submitting this template represents and warrants
that he or she is authorized by the Patent Holder to agree to the
above-selected licensing declaration.